oprofile: fixing whitespaces in drivers/oprofile/*

Signed-off-by: Robert Richter <robert.richter@amd.com>
diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
index 50062ce..cd37590 100644
--- a/drivers/oprofile/oprof.c
+++ b/drivers/oprofile/oprof.c
@@ -94,7 +94,7 @@
 	int err = -EINVAL;
 
 	mutex_lock(&start_mutex);
- 
+
 	if (!is_setup)
 		goto out;